The stoat is a small mammal belonging to the Mustelidae family, which includes weasels, ermines, and other VERMIN. It is also known as the short-tailed WEASEL and is native to Eurasia and North America. The stoat has a long, slender body with a short tail and a pointed snout. Its fur is usually brown in summer and white in winter. Weasels, ermines, and VERMIN are all related to the stoat and share similar characteristics.